Thanks for the replies. I think I might go with a new rim. The bike was a clearance sale Wally World special and has been rode pretty hard (bashed over a lot rocks) so I'm sure the rim is of questionable quality. Not sure of the hub quality although it seems pretty smooth with no strange noises. I plan on going bike camping out in the Arizona back country in a month and a half so a heavier duty setup may be in order. Surprisingly the front rim has held up pretty well so I'm going to leave it for now. Any suggestions for a durable setup that would hold up under a lot of rocky trail riding?